Add a short program description.

[ssic.git] / src / ssic.pl

diff --git a/src/ssic.pl b/src/ssic.pl
index ba8b184355519a7b115f0d2db13c70f28dbe2800..a88e5654a9a5ba047f8333cb96c3b89a18510bb3 100755 (executable)
--- a/src/ssic.pl
+++ b/src/ssic.pl
@@ -1,5 +1,7 @@
 #!/usr/bin/perl
 #
+# ssic - Server Side Includes Compiler
+#
 # Copyright (C) 2013  Patrick "P. J." McDermott
 #
 # This program is free software: you can redistribute it and/or modify
@@ -24,6 +26,7 @@ use CGI::SSI;
 sub main
 {
        my %opts;
+       my $ssi;
        my $input;
        my $output;
 
@@ -54,18 +57,23 @@ sub main
        if ($#ARGV lt 0) {
                error(4, "No input files\n");
        }
+
+       $ssi = init_compiler($opts{'D'}, $opts{'I'});
+
        if (exists($opts{'o'})) {
                if ($#ARGV gt 0) {
                        error(4, "Cannot specify -o with multiple files\n");
                }
-               compile($ARGV[0], $opts{'o'}, $opts{'D'}, $opts{'I'});
+               compile($ssi, $ARGV[0], $opts{'o'});
        } else {
                for $input (@ARGV) {
                        $output = $input;
                        $output =~ s/\.[^.]+$/.html/;
-                       compile($input, $output, $opts{'D'}, $opts{'I'});
+                       compile($ssi, $input, $output);
                }
        }
+
+       undef $ssi;
 }
 
 sub usage
@@ -116,15 +124,35 @@ sub error
        exit($status);
 }
 
+sub init_compiler
+{
+       my ($vars, $root) = @_;
+       my $ssi;
+       my $var_name;
+       my $var_value;
+
+       %ENV = (
+               "DOCUMENT_ROOT" => $root,
+       );
+
+       $CGI::SSI::DEBUG = 0;
+       $ssi = CGI::SSI->new();
+
+       $ssi->set("DOCUMENT_ROOT" => $root);
+
+       while (($var_name, $var_value) = each(%{$vars})) {
+               $ssi->set($var_name => $var_value);
+       }
+
+       return $ssi;
+}
+
 sub compile
 {
-       my ($input, $output, $vars, $root) = @_;
+       my ($ssi, $input, $output) = @_;
        my $input_fh;
        my $input_abs;
        my $output_fh;
-       my $ssi;
-       my $var_name;
-       my $var_value;
 
        if ($input eq $output and $input ne "-") {
                warning("Input and output files are equal\n");
@@ -148,23 +176,18 @@ sub compile
        }
 
        # CGI::SSI uses SCRIPT_FILENAME to determine the value of LAST_MODIFIED.
-       %ENV = (
-               "DOCUMENT_NAME" => $input,
-               "DOCUMENT_URI" => $input,
-               "DOCUMENT_ROOT" => $root,
-               "SCRIPT_FILENAME" => $input_abs,
-       );
+       $ENV{"DOCUMENT_NAME"} = $input;
+       $ENV{"DOCUMENT_URI"} = $input;
+       $ENV{"SCRIPT_FILENAME"} = $input_abs;
 
-       $CGI::SSI::DEBUG = 0;
-       $ssi = CGI::SSI->new(
-               "DOCUMENT_NAME" => $input,
-               "DOCUMENT_URI" => $input,
-               "DOCUMENT_ROOT" => $root,
-       );
+       # Reset config tags to default values.
+       $ssi->config("errmsg",
+               "[an error occurred while processing this directive]");
+       $ssi->config("sizefmt", "abbrev");
+       $ssi->config("timefmt", undef);
 
-       while (($var_name, $var_value) = each(%{$vars})) {
-               $ssi->set($var_name => $var_value);
-       }
+       $ssi->set("DOCUMENT_NAME" => $input);
+       $ssi->set("DOCUMENT_URI" => $input);
 
        print($output_fh $ssi->process(<$input_fh>));
 
@@ -173,10 +196,9 @@ sub compile
        }
        if ($output ne "-") {
                close($output_fh);
-       }
-
-       if (not rename($output . "~", $output)) {
-               error(4, "%s: %s\n", $output, $!);
+               if (not rename($output . "~", $output)) {
+                       error(4, "%s: %s\n", $output, $!);
+               }
        }
 }